The Advanced Linux Sound Architecture is composed of several parts. The first is a fully modularized sound driver which supports module autoloading, devfs, isapnp autoconfiguration, and gives complete access to analog audio, digital audio, control, mixer, synthesizer, DSP, MIDI, and timer components of audio hardware. It also includes a fully-featured kernel-level sequencer, a full compatibility layer for OSS/Free applications, an object-oriented C library which covers and enhances the ALSA kernel driver functionality for applications (client/server, plugins, PCM sharing/multiplexing, PCM metering, etc.), an interactive configuration program for the driver, and some simple utilities for basic management.

digup is a console tool to update md5sum or shasum digest files. It will read existing digest files, check the current directory for new, updated, modified, renamed, or deleted files, and query the user with a summary of changes. After reviewing the updates, they can be written back to the digest file. This makes digup very useful to update and verify incremental archives like chronological data storages, which are commonly stored and backed up on hard disks. Using a full file digest scan, even slowly creeping bad blocks on old hard disks can be detected. By using a crontab entry, this check can be performed unattended and routinely.

Nagios is a host, service, and network monitoring
system that will watch your network and alert you
to problems before your clients or end-users do.
The system runs checks on hosts and services that
you specify using plugins that return status
information to Nagios. When problems are
encountered, the system will send notifications to
system administrators so that they can take action
on the problem. The JumpBox for Nagios gives you
a head start to using the system. It eliminates
the complexity involved in getting the
application installed, and allows you to focus on
the configuration for your specific environment.
Since Nagios is based on plugins, depending on
what you want to do this will vary in complexity.

GroundWork Monitor Community Edition can give you insight into your computing infrastructure, allowing you to see the current and historical states of all your computers: servers, desktops, and laptops, all of your network devices, all of your services (like TCP/IP and Web services), and all of your applications (like mail servers and database apps). You can choose to be alerted when something goes awry via pager, SMS, email, or phone, and even set up automatic restarts or fall-overs.

Cacti is a complete network graphing solution
designed to harness the power of RRDTool's data
storage and graphing functionality. The JumpBox
for Cacti allows you to be up and running with
Cacti in under a minute on any OS that supports
virtualization.